在web自定义控件！（在IDE面板上引用可以看到的！非.ascx的那种）通过属性控制起visiable属性？

Question

在web自定义控件！（在IDE面板上引用可以看到的！非.ascx的那种）通过属性控制起visiable属性？

Answer 1

我做的一个项目里 很多地方都有5个按纽添加 修改 删除 取消 查询我现在照网上的例子写了个有上述5个按纽的自定义控件 生成DLL 在工具箱里拖到页面
能显示出来！声明的事件也没问题但是 怎么通过设置属性 来控制这些按狃的VISIABLE 和 enable 属性就不知道怎么搞了小弟第一次写这玩意 各位大哥帮忙！！！！！

Answer 2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;namespace MyControls
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:SubmitButtons runat=server></{0}:SubmitButtons>")]
    public class SubmitButtons : WebControl,INamingContainer
    {
        private Button _btnAdd;
        private Button _btnEdit;
        private Button _btnDel;
        private Button _btnQuery;
        private Button _btnCancel;        private bool _showAddButton = true;
        private bool _showEditButton = true;
        private bool _showDelButton = true;
        private bool _showQueryButton = false;
        private bool _showCancelButton = true;        private Byte _buttonState = 0;        public Byte ButtonState
        {
            get { return _buttonState; }
            set { _buttonState = value; }
        }         private string _buttonsCss = "btn21";        [Description("获取和设置添加按纽的Visible属性")]
        public bool ShowAddButton
        {
            get
            {
                if (ViewState["ShowAddButton"] == null)
                    return _showAddButton;                return Convert.ToBoolean(ViewState["ShowAddButton"]);
            }
            set
            {
                ViewState["ShowAddButton"] = value;
            }
        }        [Description("获取和设置修改按纽的Visible属性")]
        public bool ShowEditButton
        {
            get
            {
                if (ViewState["ShowEditButton"] == null)
                    return _showEditButton;                return Convert.ToBoolean(ViewState["ShowEditButton"]);
            }
            set
            {
                ViewState["ShowEditButton"] = value;
            }
        }        [Description("获取和设置删除按纽的Visible属性")]
        public bool ShowDelButton
        {
            get
            {
                if (ViewState["ShowDelButton"] == null)
                    return _showDelButton;                return Convert.ToBoolean(ViewState["ShowDelButton"]);
            }
            set
            {
                ViewState["ShowDelButton"] = value;
            }
        }        [Description("获取和设置查询按纽的Visible属性")]
        public bool ShowQueryButton
        {
            get
            {
                if (ViewState["ShowQueryButton"] == null)
                    return _showQueryButton;                return Convert.ToBoolean(ViewState["ShowQueryButton"]);
            }
            set
            {
                ViewState["ShowQueryButton"] = value;
            }
        }        [Description("获取和设置取消按纽的Visible属性")]
        public bool ShowCancelButton
        {
            get
            {
                if (ViewState["ShowCancelButton"] == null)
                    return _showCancelButton;                return Convert.ToBoolean(ViewState["ShowCancelButton"]);
            }
            set
            {
                ViewState["ShowCancelButton"] = value;
            }
        }        [Description("获取和设置所有Button的属性")]
        public string ButtonsCss
        {
get
{
if(ViewState["ButtonsCss"] == null)
return _buttonsCss ; return ViewState["ButtonsCss"].ToString() ;
}
set
{
ViewState["ButtonsCss"] = value ;
}
        }
        [Description("点击添加按钮的事件")]
        public event EventHandler BtnAdd_OnClick;        [Description("点击修改按钮的事件")]
        public event EventHandler BtnEdit_OnClick;        [Description("点击删除按钮的事件")]
        public event EventHandler BtnDel_OnClick;        [Description("点击查询按钮的事件")]
        public event EventHandler BtnQuery_OnClick;        [Description("点击取消按钮的事件")]
        public event EventHandler BtnCancel_OnClick;        public SubmitButtons()
        {
            InitControls();
        }        private void InitControls()
        {
            _btnAdd = new Button();
            _btnAdd.Text = "添  加";
            _btnAdd.CssClass = _buttonsCss;
            _btnEdit = new Button();
            _btnEdit.Text = "修　改";
            _btnEdit.CssClass = _buttonsCss;            _btnDel = new Button();
            _btnDel.Text = "删　除";
            _btnDel.CssClass = _buttonsCss;            _btnQuery = new Button();
            _btnQuery.Text = "查　询";
            _btnQuery.CssClass = _buttonsCss;
            _btnQuery.Visible = _showQueryButton;            _btnCancel = new Button();
            _btnCancel.Text = "取　消";
            _btnCancel.CssClass = _buttonsCss;            this.Controls.Add(_btnAdd);
            this.Controls.Add(_btnEdit);
            this.Controls.Add(_btnDel);
            this.Controls.Add(_btnQuery);
            this.Controls.Add(_btnCancel);            this._btnAdd.Click += new EventHandler(this.btnAdd_Click);
            this._btnEdit.Click += new EventHandler(this.btnEdit_Click);
            this._btnDel.Click += new EventHandler(this.btnDel_Click);
            this._btnQuery.Click += new EventHandler(this.btnQuery_Click);
            this._btnCancel.Click += new EventHandler(this.btnCancel_Click);
        }        protected override void RenderContents(HtmlTextWriter output)
        {
            this._btnDel.Attributes.Add("onclick", "return confirm('确实要删除吗?')");
            
            this._btnAdd.RenderBeginTag(output); output.Write("&nbsp;");
            this._btnEdit.RenderBeginTag(output); output.Write("&nbsp;");
            this._btnDel.RenderBeginTag(output); output.Write("&nbsp;");
            this._btnQuery.RenderBeginTag(output); output.Write("&nbsp;");
            this._btnCancel.RenderBeginTag(output);
                    }        private void btnAdd_Click(object sender, EventArgs e)
        {
            EventArgs eventArgs = new EventArgs();
            if (this.BtnAdd_OnClick != null)
                this.BtnAdd_OnClick(this._btnAdd, eventArgs);
        }        private void btnEdit_Click(object sender, EventArgs e)
        {
            EventArgs eventArgs = new EventArgs();
            if (this.BtnEdit_OnClick != null)
                this.BtnEdit_OnClick(this._btnEdit, eventArgs);
        }
        private void btnDel_Click(object sender, EventArgs e)
        {
            EventArgs eventArgs = new EventArgs();
            if (this.BtnDel_OnClick != null)
                this.BtnDel_OnClick(this._btnDel, eventArgs);
        }
        private void btnQuery_Click(object sender, EventArgs e)
        {
            EventArgs eventArgs = new EventArgs();
            if (this.BtnQuery_OnClick != null)
                this.BtnQuery_OnClick(this._btnQuery, eventArgs);
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            EventArgs eventArgs = new EventArgs();
            if (this.BtnCancel_OnClick != null)
                this.BtnCancel_OnClick(this._btnCancel, eventArgs);
        }
    }
}